Ball point pen



FIG. 1 is a front elevational view of a ball point pen showing my new design with the writing tip extended;

FIG. 2 is a left side elevational view of FIG. 1;

FIG. 3 is a right side elevational view with the writing tip retracted;

FIG. 4 is a rear elevational view of FIG. 3;

FIG. 5 is a bottom plan view of FIG. 3; and,

FIG. 6 is a top plan view of FIG. 1. 

The ornamental design for a ball point pen, as shown and described. 